Question

\[N{{a}_{2}}{{B}_{4}}{{O}_{7}}\cdot 10{{H}_{2}}O\xrightarrow{\Delta }X\]      \[\xrightarrow{\Delta }Y+Z\]
$$X, Y$$ and $$Z$$ in the reaction are

A. $$X = N{a_2}{B_4}{O_7},Y = NaB{O_2},$$      $$Z = {B_2}{O_3}$$  
B. $$X = N{a_2}{B_4}{O_7},Y = {B_2}{O_3},$$      $$Z = {H_3}B{O_3}$$
C. $$X = {B_2}{O_3},Y = NaB{O_2},$$      $$Z = B{\left( {OH} \right)_3}$$
D. $$X = NaB{O_2},Y = {B_2}{O_3},$$      $$Z = B{\left( {OH} \right)_3}$$
Answer :   $$X = N{a_2}{B_4}{O_7},Y = NaB{O_2},$$      $$Z = {B_2}{O_3}$$
Solution :
\[N{{a}_{2}}{{B}_{4}}{{O}_{7}}\cdot 10{{H}_{2}}O\xrightarrow{\Delta }\underset{\left( X \right)}{\mathop{N{{a}_{2}}{{B}_{4}}{{O}_{7}}}}\,\]       \[\xrightarrow{\Delta }\underset{\left( Y \right)}{\mathop{2NaB{{O}_{2}}}}\,+\underset{\left( Z \right)}{\mathop{{{B}_{2}}{{O}_{3}}}}\,\]

Releted MCQ Question on
Inorganic Chemistry >> P - Block Elements

Releted Question 1

The reddish brown coloured gas formed when nitric oxide is oxidised by air is

A. $${N_2}{O_5}$$
B. $${N_2}{O_4}$$
C. $$N{O_2}$$
D. $${N_2}{O_3}$$
Releted Question 2

The temporary hardness of water due to calcium carbonate can be removed by adding —

A. $$CaC{O_3}$$
B. $$Ca{\left( {OH} \right)_2}\,$$
C. $$CaC{l_2}$$
D. $$\,HCl$$
Releted Question 3

Which of the following is most stable to heat

A. $$HCl$$
B. $$HOCl$$
C. $$HBr$$
D. $$HI$$
Releted Question 4

White $$P$$ reacts with caustic soda. The products are $$P{H_3}$$ and $$Na{H_2}P{O_2}.$$   This reaction is an example of

A. Oxidation
B. Reduction
C. oxidation and reduction
D. Neutralisation

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P - Block Elements


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